How to Use a Tape Measure

What is a Tape Measure

A tape measure is a roll of metal tape with measurement markings on and is used for measuring. Usually the tape is yellow and rolled in a plastic case. Tape measures are commonly used in construction, architecture, building, home projects, crafts, and woodworking. They usually come in lengths from 6 feet to 35 feet long. Tape measures may have measurements in imperial and metric, imperial-only, or metric-only.

Reading a Tape Measure

Tape measure markings represent the fractions of an inch. Each large tick represents one inch (1″) and the ticks between represent the following fractions: 1⁄16“, 1⁄8“, 3⁄16“, 1⁄4“, 5⁄16“, 3⁄8“, 7⁄16“, 1⁄2“, 9⁄16“, 5⁄8“, 11⁄16“, 3⁄4“, 13⁄16“, 7⁄8“, and 15⁄16“. To read a tape measure find the number next to the large tick, and then find how many small ticks past it the measurement is. Add the number next to the large tick with the fraction to get the measurement. eg. if your 5 ticks past the number 4 tick then the measurement is 4 5⁄16“.

What are the Tape Measure Markings

In order to read a tape measure you need to understand what all of the little markings mean. The large ticks are 1″ apart and the small ticks are fractions of an inch.

The ticks in the middle of the inch markings are half-inch markings, and there is 1⁄2” between each inch marking and half-inch marking.

The ticks between the inch markings and half-inch markings are quarter-inch markings. There is 1⁄4” between the one inch marking and the quarter-inch marking. There is 1⁄4” between each quarter-inch marking and the half-inch marking.

The second smallest ticks are eighth-inch markings and there is 1⁄8” between the eighth-inch markings and the quarter-inch markings and one-inch markings.

The smallest ticks on a tape measre are sixteenth-inch markings. There is 1⁄16” between each marking on the tape measure.

Tape Measure Inch Fractions

See the decimal equivalents for all of the fractions on a tape measure. Also see our inch fraction calculator for converting between decimal and inch fractions.

Inch Fraction Decimal and Millimeter Equivalents

Fraction

Decimal

Millimeters

1⁄16”

0.0625

1.5875

1⁄8”

0.125

3.175

3⁄16”

0.1875

4.7625

1⁄4”

0.25

6.35

5⁄16”

0.3125

7.9375

3⁄8”

0.375

9.525

7⁄16”

0.4375

11.1125

1⁄2”

0.5

12.7

9⁄16”

0.5625

14.2875

5⁄8”

0.625

15.875

11⁄16”

0.6875

17.4625

3⁄4”

0.75

19.05

13⁄16”

0.8125

20.6375

7⁄8”

0.875

22.225

15⁄16”

0.9375

23.8125

1″

1

25.4

Tape Measure Tips and Tricks

Using the Sliding Hook

The hook on a tape measure usually slides just a little bit. This is by design to account for the thickness of the hook on the end. This allows the tape measure to be accurate when hooking onto a surface and also when butting the end up to a surface. Be mindful of tape measures that do not have a sliding hook as they will not be as accurate.

Using the Nail Grip on the Hook

The hook on a tape measure often has a small hole or groove in it. This is to allow hooking the hook on a nail or screw so it doesn’t slide of when making long measurements.

Using the Sides of the Hook

Some tape measures have large hooks that can be used to grip surfaces on the side of the hook. Using these can improve the gripping ability of the hook and improve the accuracy of measurements since the tape measure will not need to be twisted to read the markings.

Using the Tape Lock

Almost all tape measures have a lock that will keep the tape measure from recoiling. This is useful if you need to take tension off of the tape measure or if you need to set the tape measure down while it is extended.

Choosing a Tape Measure

There are many tape measures on the market and many serve very different purposes. When choosing a tape measure consider what you’ll be using it for, how long you need it to be, and how much you’d prefer to spend. See our review of the best tape measures to find which tape measure we found to be the best and for reviews on several leading tape measures on the market. Consider using a printable tape measure if you need one quickly or if you’re in a pinch.